Python Wand ellipse()用法及代码示例

elippse()函数用于在图像上绘制椭圆。就像绘图圆一样，ellipse()函数需要两对点，即原点和一对(x，y)椭圆半径。要绘制局部椭圆，请提供一对开始和结束度作为第三个参数。

用法：

wand.drawing.ellipse(origin, radius, rotation)

参数：

参数	输入类型	描述
origin	(collections.abc.Sequence)-(numbers.Real，numbers.Real)	对，代表椭圆的原点x和y。
radius	(collections.abc.Sequence)-(numbers.Real，numbers.Real)	表示椭圆的半径x和y的对
rotation	(collections.abc.Sequence)-(numbers.Real，numbers.Real)	对，代表椭圆的开始和结束。默认值(0，360)

范例1：

# Import required objects from wand modules 
from wand.image import Image 
from wand.drawing import Drawing 
from wand.color import Color 
  
# generate object for wand.drawing 
with Drawing() as draw:
    # set stroke color 
    draw.stroke_color = Color('black') 
  
    # set width for stroke 
    draw.stroke_width = 1
  
    # fill white color in arc 
    draw.fill_color = Color('white') 
    origin = (100, 100) 
    perimeter = (50, 100) 
  
    # draw circle using circle() function 
    draw.ellipse(origin, perimeter)  
    with Image(width = 200, 
               height = 200, 
               background = Color('green')) as img:
        # draw shape on image using draw() function 
        draw.draw(img) 
        img.save(filename ='ellipse.png')

输出：

范例2：使用旋转参数绘制部分椭圆

# Import required objects from wand modules 
from wand.image import Image 
from wand.drawing import Drawing 
from wand.color import Color 
  
# generate object for wand.drawing 
with Drawing() as draw:
    # set stroke color 
    draw.stroke_color = Color('black') 
  
    # set width for stroke 
    draw.stroke_width = 1
  
    # fill white color in arc 
    draw.fill_color = Color('white') 
    origin = (100, 100) 
    perimeter = (100, 50) 
    rotation = (0, 270) 
  
    # draw circle using circle() function 
    draw.ellipse(origin, perimeter, rotation)  
    with Image(width = 200, 
               height = 200, 
               background = Color('green')) as img:
        # draw shape on image using draw() function 
        draw.draw(img) 
        img.save(filename ='ellipsepartial.png')

输出：

相关用法

注：本文由纯净天空筛选整理自RahulSabharwal大神的英文原创作品 Wand ellipse() function in Python。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。